如何显示JPEG文件的方向? [英] How can I display the orientation of a JPEG file?
问题描述
什么ImageMagick命令将显示JPG文件的方向?
What ImageMagick command will display the orientation of a JPG file?
推荐答案
您可以使用
identify -format '%[EXIF:Orientation]' <image.jpg>
根据 identify -format
docs (关于exif元数据的内容还有些不足).
as per identify -format
docs (It's the bit further down about exif metadata).
尝试
identify -verbose <image.jpg>
要查看图像中的元数据是什么(例如,如果图像不是用相机拍摄的,则不会设置方向标签).
To see what metadata is in the image (for example if the image was not taken with a camera, the orientation tag will not be set).
或者,您可以做类似的事情
Alternatively you could do something like
identify -format '%wx%h' <image.jpg>
给出宽度的高度(例如'800x598','1936x2592'),并使用这些值确定图像是否垂直(不确定该图像的可靠性如何-有时您用相机拍摄人像图像并且EXIF数据将正确记录方向,但是图像可能仍然出现横向).
which gives you the width by height (e.g. '800x598', '1936x2592') and use these to determine whether the image is upright or not (not sure how reliable this is though - sometimes you take a portrait image with a camera and the EXIF data will correctly record the orientation, but the image may still appear landscape).
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